I just tried again and noticed that when netzip is trying to download the file, the url ends with "securedownload.ez" but there is no file name specified after that, which is what the error message has been telling me all along. The download link seems to be missing the name of the file to download. By the way,the link you provided me in your first response didn't work because you misspelled renderosity. When I fixed it, it took me to my Past Purchases page which is where I've been working all along